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Gibson launching self-tuning guitars, rockers rejoice - Engadget

Gibson's Powertune system has been in the works for quite awhile, and although there are other axes out there that claim to tune themselves, only a Gibson will do for some. Reportedly, the firm is readying a "new line of instruments" that are equipped with the system, which includes "an additional set of pickups mounted underneath the strings that are used specifically for the tuning process." By using all sorts of digital electronics and fancy algorithms, the equipment is able to automatically tune the strings, but it only activates when users pull out the Master Control Knob. Purportedly, the system can have have all six strings back in tune "within a few seconds," and you can even utilize a number of pre-programmed alternate tunings if that's your bag. 'Course, it's certainly debatable whether the hands-off approach to tuning is worth the extra $899 or so, but it's sure sweet to have the opion. Click on for more pictures.

The hardware itself is actually Powertune, from tronical, and it only works with a smallish set of electric guitars. Still, it would be convenient to be able to change tunings effortlessly in the middle of a set.